Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1980-11-24
1982-11-30
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307246, 307353, 330288, 328159, H03F 372, H03F 316
Patent
active
043617719
ABSTRACT:
A voltage summation circuit receives a series of input voltage signals and provides an output voltage signal which represents a summation of the input voltage signals. The voltage summation circuit includes first and second capacitors, a current mirror, and an input switch. During a first clock phase of each cycle in which an input voltage signal is received, the input switch connects the first capacitor to the input to charge the first capacitor as a function of the input voltage signal. During a second clock phase the input switch connects the first capacitor to the current mirror to discharge the first capacitor. The current mirror is connected to the second capacitor, so that the change in charge on the first capacitor during the second clock phase results in a similar change in charge on the second capacitor. The charging and discharging of the first capacitor during the first and second clock phases is repeated for each input voltage signal. The total change in charge on the second capacitor, and thus the total change in the output voltage signal, represents a summation of the input voltage signals.
REFERENCES:
patent: 3745383 (1973-07-01), Sangster
patent: 3835410 (1974-09-01), Wittlinger
patent: 4172999 (1979-10-01), Leidich
patent: 4216393 (1980-08-01), Gillberg et al.
patent: 4323796 (1982-04-01), Lathrope
Heyman John S.
Honeywell Inc.
Neils Theodore F.
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